primer.io
Observed Jul 18, 2026, 13:30 UTC (8h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Secured byAmazon
Also usesAtlassianGoogle Search ConsoleNotionStripe
1 subdomain · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat primer.io actually stands on - every host below is a signed observation
primer.io
A / AAAA
108.138.85.77108.138.85.75108.138.85.71108.138.85.91
Cloudflareserves the site
NS
ns-1368.awsdns-43.orgns-1887.awsdns-43.co.ukns-75.awsdns-09.comns-997.awsdns-60.net
awsdns-43.org + awsdns-43.co.uk + moreanswers its DNS
MX
aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
TLS
primer.io
Amazonissued its certificate
DNS Records
A 4
108.138.85.77108.138.85.75108.138.85.71108.138.85.91
MX 5
1aspmx.l.google.com10alt3.aspmx.l.google.com10alt4.aspmx.l.google.com5alt1.aspmx.l.google.com5alt2.aspmx.l.google.com
TXT 21
58a2fc6ed39fd083f55d4182bf88826dMS=ms98365364OSSRH-68153_gitlab-pages-verification-code.primer.io TXT gitlab-pages-verification-code=808572eb0177d769e93055ae827cd40banthropic-domain-verification-8ypjt2=Xt0SSh5Nje6UIMLzg3OCXfrDMapple-domain-verification=YqUah1JEY1pLqRdOatlassian-domain-verification=nejn2swKEkRpfzOzpDYxX8kqhonaQqg7ZizF/POUyd33BTmPaisO4I8Q2AOD5kTjatlassian-sending-domain-verification=05c4c178-5afc-4afa-beaa-6023e5cbc548google-site-verification=1We075YjjEPPj9Xqo5YM1kCoqZoumD7mocJdbkNJ9-Qgoogle-site-verification=1vPztZJyrTMWYo-QXemK2sDuD7W7CvxyHGoYvpSIDR0
NS 4
ns-1368.awsdns-43.orgns-1887.awsdns-43.co.ukns-75.awsdns-09.comns-997.awsdns-60.net
SOA 1
ns-75.awsdns-09.com awsdns-hostmaster.amazon.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
primer.io |
C=US, O=Amazon, CN=Amazon RSA 2048 M01 | Wed, 03 Feb 2027 23:59:59 +0000 |
Amazon RSA 2048 M01 |
C=US, O=Amazon, CN=Amazon Root CA 1 | Fri, 23 Aug 2030 22:21:28 +0000 |
Amazon Root CA 1 |
C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2 | Thu, 31 Dec 2037 01:00:00 +0000 |
Subdomains (1)
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
15edb2e8-13f8-402f-9eb3-d682e0f2aab6- Output Hash
a0cc5a11d0357a2b1188b51188360956f595b0de42a9125a826a3a0169397ebc- Signature
ed25519:ac9470ebc98b6a0662746cec0a282353060d48ab99f7797a37ad585e41ca4503037a3f55ff647ef4206ea357512f7b954aa1823109d07eb2fc7f90a016f0fc00- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast